// 定义懒加载插件

import { useIntersectionObserver } from '@vueuse/core'


export const lazyPlugin = {
  install(app) {
    // 懒加载指令逻辑
    app.directive('img-lazy', {
      mounted(el, binding) {
        const { stop } = useIntersectionObserver(el,([{ isIntersecting }]) => {
          if (isIntersecting) {
            // 进入视口区域
            el.src = binding.value
            stop()
          }
        })
      }
    })
  }
}